The vulnerability of the implementation of the HMAC-SHA-256 mechanism in the GnuTLS cryptographic library allows a perpetrator to carry out an “Lucky 13” attack and a attack that recovers the plaintext.

The vulnerability of the HMAC-SHA-256 mechanism implemented in the GnuTLS cryptographic library is related to errors in the implementation of the cryptographic algorithm. Exploiting this vulnerability allows a malicious actor to perform both a “Lucky 13” attack and an attack that recovers the...

Ubuntu 16.04 LTS : ARM mbed TLS vulnerabilities (USN-4267-1)

The remote Ubuntu 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4267-1 advisory. It was discovered that mbedtls has a bounds-check bypass through an integer overflow that can be used by an attacked to execute arbitrary code or cause a...

Ubuntu: Security Advisory (USN-4267-1)

The remote host is missing an update for the SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

U.S. Dept Of Defense: [HTAF4-213] [Pre-submission] CVE-2018-2879 (padding oracle attack in the Oracle Access Manager) at https://█████████

Description We were able to identify CVE-2018-2879 in Oracle Access Manager, used on the https://██████ Link to the CVE: https://nvd.nist.gov/vuln/detail/CVE-2018-2879 This vulnerability is rated critical, and may allow unauthenticated attacker with network access via HTTP to compromise Oracle...

CVE-2017-1000385

An erlang TLS server configured with cipher suites using RSA key exchange, may be vulnerable to an Adaptive Chosen Ciphertext attack AKA Bleichenbacher attack against RSA. This may result in plain-text recovery of encrypted messages and/or a man-in-the-middle MiTM attack, despite the attacker not...

USN-3999-1: GnuTLS vulnerabilities

Eyal Ronen, Kenneth G. Paterson, and Adi Shamir discovered that GnuTLS was vulnerable to a timing side-channel attack known as the "Lucky Thirteen" issue. A remote attacker could possibly use this issue to perform plaintext-recovery attacks via analysis of timing data. This issue only affected...

USN-3999-1 gnutls28 vulnerabilities

Eyal Ronen, Kenneth G. Paterson, and Adi Shamir discovered that GnuTLS was vulnerable to a timing side-channel attack known as the "Lucky Thirteen" issue. A remote attacker could possibly use this issue to perform plaintext-recovery attacks via analysis of timing data. This issue only affected...

SSL/TLS: Birthday attack against 64-bit block ciphers (SWEET32)

A flaw was found in the way the DES/3DES cipher was used as part of the TLS/SSL protocol. A man-in-the-middle attacker could use this flaw to recover some plaintext data by capturing large amounts of encrypted traffic between TLS/SSL server and client if the communication used a DES/3DES based...

OpenVPN < 2.3.15 Weak Cryptographic Cipher Vulnerability (Windows)

According to its self-reported version number, the version of OpenVPN installed on the remote Windows host is prior to 2.3.15. It is, therefore, affected by a weak cryptographic cipher vulnerability. OpenVPN's default cipher, BF-CBC, is vulnerable to plaintext recovery when enough cipher text has...

EulerOS Virtualization for ARM 64 3.0.1.0 : gnutls (EulerOS-SA-2019-1388)

According to the versions of the gnutls packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - It was found that the GnuTLS implementation of HMAC-SHA-384 was vulnerable to a Lucky thirteen style attack. Remote...

Information Disclosure

IBM Java SE is vulnerable to information disclosure. The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the...

Plaintext Weak Encryption

An attack technique against the W3C XML Encryption Standard when block ciphers were used in CBC mode could allow a remote attacker to conduct chosen-ciphertext attacks, leading to the recovery of the entire plain text of a particular cryptogram. CVE-2011-1096 JBoss Web Services leaked side-channe...

openSUSE Security Update : Mozilla Thunderbird (openSUSE-2019-364)

This update for Mozilla Thunderbird to version 52.8 fixes the following issues : Security issues fixed MFSA 2018-13, boo1092548 : - CVE-2018-5183: Backport critical security fixes in Skia - CVE-2018-5154: Use-after-free with SVG animations and clip paths - CVE-2018-5155: Use-after-free with SVG...

erlang: TLS server vulnerable to Adaptive Chosen Ciphertext attack allowing plaintext recovery or MITM attack

An erlang TLS server configured with cipher suites using RSA key exchange, may be vulnerable to an Adaptive Chosen Ciphertext attack AKA Bleichenbacher attack against RSA. This may result in plain-text recovery of encrypted messages and/or a man-in-the-middle MiTM attack, despite the attacker not...

CVE-2019-6593

On BIG-IP 11.5.1-11.5.4, 11.6.1, and 12.1.0, a virtual server configured with a Client SSL profile may be vulnerable to a chosen ciphertext attack against CBC ciphers. When exploited, this may result in plaintext recovery of encrypted messages through a man-in-the-middle MITM attack, despite the...

Code injection

On BIG-IP 11.5.1-11.5.4, 11.6.1, and 12.1.0, a virtual server configured with a Client SSL profile may be vulnerable to a chosen ciphertext attack against CBC ciphers. When exploited, this may result in plaintext recovery of encrypted messages through a man-in-the-middle MITM attack, despite the...

CVE-2019-6593

On BIG-IP 11.5.1-11.5.4, 11.6.1, and 12.1.0, a virtual server configured with a Client SSL profile may be vulnerable to a chosen ciphertext attack against CBC ciphers. When exploited, this may result in plaintext recovery of encrypted messages through a man-in-the-middle MITM attack, despite the...

CVE-2019-6593

CVE-2019-6593 affects BIG-IP TMM TLS/Client SSL CBC-mode sessions on versions 11.5.1–11.5.4, 11.6.1 and 12.1.0, enabling plaintext recovery via a chosen-ciphertext MITM without server private-key access. F5 advisory K10065173 documents affected branches: 12.x vulnerable in 12.1.0 with fixes in 12...

F5 Networks BIG-IP : TMM TLS virtual server vulnerability (K10065173)

A BIG-IP virtual server configured with a Client SSL profile may be vulnerable to a chosen ciphertext attack against CBC ciphers. When exploited, this may result in plaintext recovery of encrypted messages through a man-in-the-middle MITM attack, despite the attacker not having gained access to t...

SUSE SLED15 / SLES15 Security Update : gnutls (SUSE-SU-2018:2930-1)

This update for gnutls fixes the following security issues : Improved mitigations against Lucky 13 class of attacks CVE-2018-10846: 'Just in Time' PRIME + PROBE cache-based side channel attack can lead to plaintext recovery bsc1105460 CVE-2018-10845: HMAC-SHA-384 vulnerable to Lucky thirteen atta...